Water-heating apparatus



May 6, 1930. A. PFEN-DER WATER HEATING APPARATUS Fiied Aug. s1, 1 927 Patented May 6, 1930 'UNITED sm'nazs` PAraNr `olirllc ADOLPE OF CHICAGO, ILLINOIS, ASSIGNOR TO FERGUSON AND LANGE FOUNDRY COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS WATER-HEATING APPARATUS fective way for heating water for such purposes so as to aiiord an adequate supplyof hot water of even temperature is to force the water through heating units submerged in the hot Water portion of the steam chamber of a boiler o'r other container for heated water,'such method serving to heat the domestic suplply to the temperature desired for use wit out danger of ringing the temperature to the point at which the impurities carried by the water are precipitated and deposited on the Walls of the heating unit. This production of the desired hot water supply without the precipitation of the impurities is of very great importance, serving to keep the heating unit in proper condition for effective use indenitely, in marked contrast to the old method of heating by direct contact of the flames with the heating unit.

It is one of the objects of my invention to provide an improved form of heating unit which can be installed advanta eously in many types of boilers or other tan s without the necessity for employing extreme accuracy in the cutting operation b which the openings are provided in the wa l of the tank for the insertion and complete installation of the heating unit. In many installations in new buildings, no electricfcurrent or other power is available, so that it is necessary to do drill ing operations by' hand. In many cases also the space for the workmanis very limited, making the work correspondingly inaccessible and difficult. It is one of the objects 'of my invention to provide an improved unit which can be installed effectively in connection with an opening or openings cut with only approximate accuracy by the use of .an acetylene torch, for example, the arrangement being such that the installation canbe completed without any cuttin or drilling operations other than those readlly effected by the use of the torch.

Itis another object of my invention to provide improved means for securing the lead of the heating unit in position on the outer face of the wall of the boiler or other tank for supporting the unit, so arranged that the unit can be produced and assembled in substantially complete form at the factor and can then be readily secured in place wit a minimum of Work on the job.

Itis another object of my invention to improve apparatus of this type in sundry details hereinafter pointed out. The preferred means by which I have accomplished my several objects are illustrated in the drawings and are hereinafter specifically described. That which I believe to be new and desire to cover by Letters Patent is set forth in the claims.

Fig. l is a diagrammatic view of a heating ystem embodying my improved construclon.

Fig. 2 is a side view of one of my improved heating units, liartly broken away, and partly 1n section asta en on an enlarged scale at the line 2--2 of Fig. 1.

c Fig. 3 is a vertical cross section through my improved head, being taken substantially at l1ne 3 3 of Fig. 2.

Fig. 4 is an outside face view of a portion of the wall of a boiler or other tank With the openings cut therein for the insertion and complete installation of my improved heating unit.

Fig. 5 is a front face view of a fragmentary portion of the parts shown in Fig. 4, shown on an enlarged scale, and with the bolt and my improved retaining means in position therein.

Fig. 6 is a View of the parts shown inmFig.

ing a plluralit of water heating units secured t erem y means of heads 16 as hereroo 'to the tank 19 or to the boiler 15 for reheating, the arrangement being such, in the construction shown, that the water is adapted to circulate continuously by gravity through the system of pipes, the return pipe 22 being connected by a pipe 23 with the tank 19 and by a pipe 24 with the heads 16. In the construction illustrated, a check valve 25 is provided in the return pipe for preventing upward movement of the water through such pipe. Shut-olf valves 26 are provided in the pipe 23 and the pipes 17. A blow-out valve 27 of any approved type is provided adjacent to the heads 16 on the cold Water side thereof. A cold water pipe 28 is connected with the tank 19 for feeding cold water under pressure thereto.

As is best shown in Figs. 2 and 3, the heads 16 are in the form of hollow castings, to the lower portions of which the pipe' 24 is connected, and to the upper portions of which the pipes 17 are connected, each of the heads being divided by a partition 29 into two separate chambers, a hot water chamber 30 at thetop and a cold water chamber 31 at the bottom. At its rear face, each gf the heads 16 is provided with one or more heating coils 32, the upper arm of which is in communication with the chamber 30 and the lower arm of which is in communication with the chamber 31, in the construction shown each of the heating coils being in the form of a loop with the hot Water portion above the cold Water portion. In Fig. 2, the head 16 and coil 32 are shown in position with the coil 32 extending through an opening 33 in the wall'34 of the hot Water portion of the boiler 15. As will be readily understood, as the water Within the coil 32 becomes heated by the action ofthe hot Water surrounding the coil, such hot Water in the coil has a tendency to rise through the pipes 17 to the tank 19 for producing a circulation through the systeni of pipes as described.

Referring now particularly to Figs. 4 to 7, 35 and 36 indicate auxiliary openmgs 1n the wall 34, such auxiliary openings being formed in the construction shown as parts of hthe opening 33 in the form of notches in the sides of such opening. Within the auxiliary openings 35 and 36, I mount supporting bolts 37, the transversely extending bearing portions of which are indicated by the numeral 38, such bearing portions in the construction shown being formed integrally with the shank portions, being in thel form of elongated heads. With the openings 33, 35 and 36 cut in the wall 34 as illustrated in Fig. 4, two bolts 37 are adapted to'be inserted through the openings 33 and brought into position in 'the notches 35 and 36 with the transversely extending heads or bearing portions 38 in contact with the inner face of the wall 34. Retaining means is provided for holding the bolts in this position while the heads 16 and coils 32 are moved into position. In the construction shown, the retaining means for each bolt is in the form of a collar 39 slidably mounted upon the bolt, being provided at one side with an arm 4() which extends along the side face and partially across the inner face of the head 38 of the bolt. The arrangement is such that when the bolt and clip as described are moved into position as shown in Fig. 6 the collar 39 is brought into frictional engagement with the outer face of the Wall 34 about the notch 35 for holding the bolt frictionally in position, the clip being formed more or less resiliently for enabling a work- I man readilyto mount the parts in position. With the bolts 37 held in position in the notches 35 and 36, the coils 32 are inserted between the bolts into the opening 33, a gasket 41 being provided upon the coils v'for engagement between the rear end of the head 16 and the front face of the wall 34, as is clearly shown in Fig. 2. As the head 16 is moved into position, the bolts 37 are caused to enter suitable openings at opposite sides of the head as indicated in Fig. 3, the parts bein'g secured in final operative position by means of nuts 42 upon the outer ends of the bolts, gaskets 43 being preferably provided between the nuts and the outer faces of the heads 16.

By the use of applicants construction, he is able to prepare his head and coils in final operative condition at the factory so as to leave nothing to be done on the job other than the insertion of the coil and head into position and the mounting of the nuts 42 upon the bolts, the' heads 16 being of such a size transversely as to cover completely not only the openings 33 but also the auxiliary openings 35 and 36 for closing such openings about the coils. In order to prevent the closing of the coils in a fairly short time by the deposits of sediment, scale, etc., it is necessary that the pipes be made of substantial size and is importantthat the coils beiiushed out at intervals. In view of the limited spacewithin which the coils must be mounted in many instances in the boilers in use, it-is often necessary that the opening 33 be made of substantially the minimum size capable of receiving the coils. I have found, however, in practice that the opening 33 can readily be made of such size as to receive the coils 32 and of such size as to be covered efectually by the lmismas limited to the details of construction as shown exceptso far as the claims are so restricted by the state of the art, since it will be evident that changes may Well be made in the form4 and arrangement of parts without departing Y from the spirit of my invention.

I claim:

1. A water heating apparatus, comprising in .combination a head adapted by engagement with the outer face of the wall of a receptacle for hot water about an opening in the .wall effectively to close said opening, bolts extending through said opening in spaced relation to each other adapted by operative engagement with the inner face of the Wall and with the head to hold the head securely in operative position, and'a heating coil'connected with said head and extending throughsaid opening between said bolts for taking a stream of water from the head and returning it thereto, being insertable into operative position in said opening after said bolts are in place therein.

2. A water heating apparatus, comprising in combination a head adapted b engagement with the outer face of the wa l of a receptacle for hot water about an opening in the wall 'effectively to close said opening, bolts extending through said opening at opposite sides thereof engaging said head for holding it in operative position and held'by their engagement with the head in o erative engagement with the wall, and a eating coil connected with said -liead and extending through said opening between said bolts for taking a stream of water from the head and returning it` thereto.

3. A water heating apparatus, comprising in combination a head adapted by engagement with the outer face of the wall of a receptacle for hot water about an opening in the wall effectively to close said opening, a bolt mounted in a notch in the edge of the wall at some point about said opening, a heating coil connected with said head and extend-- ing through said opening for taking a stream of-water from the head and returning it thereto, and a nut on said bolt adapted by en agement with said head to hold it secure y in position for closing said opening about said heating coil. 4' Q i 4. A water heating apparatus, comprising in combination a head adapted by engagement with the outer face of the wall of a receptacle for hot water about an opening in the wall effectively to close said opening,

bolts mounted in notches in the wall at opposite sides of said opening engaging said head for holding it in operative position and themselves electively held in position in said notches by their engagement with said head, and a heating coil connected with said head and extending through said opening between said bolts for taking a stream of water from the head and returning itthereto.

5.4 A Water heating apparatus, comprising in combination a pin insertable -through an opening in the wall of a receptacle for hot water, transversely extending means on said pin insertable with said pin through said opening for engaging the inner face of the wall with the pin projecting from the outer face of the wall, retaining means yfor holding said pin in operative position, a heating coil insel-table through said opening with the pin in operative position, a head connected with the end portions of said coil adapted by engagement with the outer face of the wall to close said opening about said coil, and means cooperating with said pin for holding said head and said coil in operative position.

6. A water heating apparatus, comprising in combination a pin insertable through an opening in the wall of a receptacle for hot water, transversely extendin means on said pin insertable with said pin through said opening for engaging the 4inner face of the wall with the pin projecting from the -outer face of the wall, retaining means adapted by yielding engagement with the wall at the edge of the opening to hold saidpin in operative position2 a heatin c oil' insertable through said opemng with t e pin in operative position, a head connected with the end portions of said coil adapted b engagement with the outer face of the wal to close said opening about said coil, and means cooper ating with said pin for .holding said head and said coil in operative position.

7. A water heating apparatus, comprising in combination a pin insertable through an opening in the wall of a receptacle -forv hot water, transversely extending means on said pin insertable with said pin through said opening for en aging the inner face of the wall with the pin projectingfrom the outer face of the wall, a clip engaging said pin and having frictional engagement with the wall at the edge of the opening for holding said pin in operative position, a heating coil insertable through said opening with the pin in operative position, a head connected with the end portions of said coil adapted by engagement with the outer face of the wall to close said opening about said coil, and means cooperating with said pin for holding said head and said coil in operative position.

8. In a water heating apparatus, the combination of two bolts extending through notches at the edges of an opening in the wall of a receptacle for hot -water,' clips mounted on said bolts each comprising a coliio` lar about the shank of the bolt and an arm connected with the collar at one side and extending across the transverse bearing portion of the bolt, said clips serving by frictional engagement WithV the outer face of the Wall about said notches to hold the bolts removably in position, a heatlng coil insertable through said opening bei ltween said bolts and said clips, a head connected with the end portions of said coil adapted by engagement with the outer face of the Wall to close said openin about said coil, and means cooperating Wit said bolts for holding said head and said coil in operative position.

ADOLPH PFENDER. 

